When I want to sit in a quiet little piece of nature in the middle of San Francisco, I often go over to Havens Street off Leavenworth near Union. It is one of those pedestrian streets with a little pathway and a bench at the end. What many don't know is that the garden at the front (right near the Leavenworth entrance), called "Tova's Garden", was designed by famed landscape architect, Thomas Church late in his career. I always wander slowly through the garden all the way to the end of the walkway and sit on the lone bench with a book for awhile.